I having problems going on with my air conditioning. Sometimes it will stop blowing out of the vents and then sometimes it blows great. I've had the control panel replaced. At times I notice fog coming from the vents. This doesn't happen all the time. The dealer can't figure out what's wrong, they tell me to bring it in when the problem is happening. But when it's happening and by the time I get to the dealer it's working fine again. Crazy! Do anyone have any suggestions or ever had this problem? Please respond, thanks.